Double spin asymmetries through QCD instantons

Double spin asymmetries through QCD instantons

We revisit the large instanton contribution to the gluon Pauli form factor of the constituent quark noted by Kochelev. We check that it contributes sizably to the single spin asymmetry in polarized p sub([arrowup])p arrow right [pi]X. We use it to predict a large double spin asymmetry in doubly pola...

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Veröffentlicht in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2014-12, Vol.90 (11), Article 114012
Hauptverfasser: Qian, Yachao, Zahed, Ismail
Format: Artikel
Sprache:eng
Schlagworte:
Asymmetry
Constituents
Cosmology
Form factors
Gluons
Gravitation
Instantons
Quarks
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Zusammenfassung:We revisit the large instanton contribution to the gluon Pauli form factor of the constituent quark noted by Kochelev. We check that it contributes sizably to the single spin asymmetry in polarized p sub([arrowup])p arrow right [pi]X. We use it to predict a large double spin asymmetry in doubly polarized p sub([arrowup])p sub([arrowup]) arrow right [pi][pi]X.
ISSN:1550-7998
1550-2368
DOI:10.1103/PhysRevD.90.114012